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      1 #ifndef _GLSTEXTURETESTUTIL_HPP
      2 #define _GLSTEXTURETESTUTIL_HPP
      3 /*-------------------------------------------------------------------------
      4  * drawElements Quality Program OpenGL (ES) Module
      5  * -----------------------------------------------
      6  *
      7  * Copyright 2014 The Android Open Source Project
      8  *
      9  * Licensed under the Apache License, Version 2.0 (the "License");
     10  * you may not use this file except in compliance with the License.
     11  * You may obtain a copy of the License at
     12  *
     13  *      http://www.apache.org/licenses/LICENSE-2.0
     14  *
     15  * Unless required by applicable law or agreed to in writing, software
     16  * distributed under the License is distributed on an "AS IS" BASIS,
     17  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     18  * See the License for the specific language governing permissions and
     19  * limitations under the License.
     20  *
     21  *//*!
     22  * \file
     23  * \brief Texture test utilities.
     24  *
     25  * About coordinates:
     26  *  + Quads consist of 2 triangles, rendered using explicit indices.
     27  *  + All TextureTestUtil functions and classes expect texture coordinates
     28  *    for quads to be specified in order (-1, -1), (-1, 1), (1, -1), (1, 1).
     29  *//*--------------------------------------------------------------------*/
     30 
     31 #include "tcuDefs.hpp"
     32 #include "tcuTexture.hpp"
     33 #include "tcuSurface.hpp"
     34 #include "tcuPixelFormat.hpp"
     35 #include "tcuRenderTarget.hpp"
     36 #include "tcuTestContext.hpp"
     37 #include "tcuTestLog.hpp"
     38 #include "tcuCompressedTexture.hpp"
     39 #include "tcuTextureUtil.hpp"
     40 
     41 #include "gluShaderProgram.hpp"
     42 #include "gluShaderUtil.hpp"
     43 
     44 #include "deMath.h"
     45 #include "deInt32.h"
     46 
     47 #include <map>
     48 
     49 namespace tcu
     50 {
     51 struct LookupPrecision;
     52 struct LodPrecision;
     53 struct TexComparePrecision;
     54 }
     55 
     56 namespace deqp
     57 {
     58 namespace gls
     59 {
     60 namespace TextureTestUtil
     61 {
     62 
     63 enum TextureType
     64 {
     65 	TEXTURETYPE_2D = 0,
     66 	TEXTURETYPE_CUBE,
     67 	TEXTURETYPE_2D_ARRAY,
     68 	TEXTURETYPE_3D,
     69 	TEXTURETYPE_CUBE_ARRAY,
     70 	TEXTURETYPE_1D,
     71 	TEXTURETYPE_1D_ARRAY,
     72 	TEXTURETYPE_BUFFER,
     73 
     74 	TEXTURETYPE_LAST
     75 };
     76 
     77 enum SamplerType
     78 {
     79 	SAMPLERTYPE_FLOAT,
     80 	SAMPLERTYPE_INT,
     81 	SAMPLERTYPE_UINT,
     82 	SAMPLERTYPE_SHADOW,
     83 
     84 	SAMPLERTYPE_FETCH_FLOAT,
     85 	SAMPLERTYPE_FETCH_INT,
     86 	SAMPLERTYPE_FETCH_UINT,
     87 
     88 	SAMPLERTYPE_LAST
     89 };
     90 
     91 SamplerType		getSamplerType		(tcu::TextureFormat format);
     92 SamplerType		getFetchSamplerType	(tcu::TextureFormat format);
     93 
     94 struct RenderParams
     95 {
     96 	enum Flags
     97 	{
     98 		PROJECTED		= (1<<0),
     99 		USE_BIAS		= (1<<1),
    100 		LOG_PROGRAMS	= (1<<2),
    101 		LOG_UNIFORMS	= (1<<3),
    102 
    103 		LOG_ALL			= LOG_PROGRAMS|LOG_UNIFORMS
    104 	};
    105 
    106 	RenderParams (TextureType texType_)
    107 		: texType		(texType_)
    108 		, samplerType	(SAMPLERTYPE_FLOAT)
    109 		, flags			(0)
    110 		, w				(1.0f)
    111 		, bias			(0.0f)
    112 		, ref			(0.0f)
    113 		, colorScale	(1.0f)
    114 		, colorBias		(0.0f)
    115 	{
    116 	}
    117 
    118 	TextureType		texType;		//!< Texture type.
    119 	SamplerType		samplerType;	//!< Sampler type.
    120 	deUint32		flags;			//!< Feature flags.
    121 	tcu::Vec4		w;				//!< w coordinates for quad vertices.
    122 	float			bias;			//!< User-supplied bias.
    123 	float			ref;			//!< Reference value for shadow lookups.
    124 
    125 	// color = lookup() * scale + bias
    126 	tcu::Vec4		colorScale;		//!< Scale for texture color values.
    127 	tcu::Vec4		colorBias;		//!< Bias for texture color values.
    128 };
    129 
    130 enum Program
    131 {
    132 	PROGRAM_2D_FLOAT = 0,
    133 	PROGRAM_2D_INT,
    134 	PROGRAM_2D_UINT,
    135 	PROGRAM_2D_SHADOW,
    136 
    137 	PROGRAM_2D_FLOAT_BIAS,
    138 	PROGRAM_2D_INT_BIAS,
    139 	PROGRAM_2D_UINT_BIAS,
    140 	PROGRAM_2D_SHADOW_BIAS,
    141 
    142 	PROGRAM_1D_FLOAT,
    143 	PROGRAM_1D_INT,
    144 	PROGRAM_1D_UINT,
    145 	PROGRAM_1D_SHADOW,
    146 
    147 	PROGRAM_1D_FLOAT_BIAS,
    148 	PROGRAM_1D_INT_BIAS,
    149 	PROGRAM_1D_UINT_BIAS,
    150 	PROGRAM_1D_SHADOW_BIAS,
    151 
    152 	PROGRAM_CUBE_FLOAT,
    153 	PROGRAM_CUBE_INT,
    154 	PROGRAM_CUBE_UINT,
    155 	PROGRAM_CUBE_SHADOW,
    156 
    157 	PROGRAM_CUBE_FLOAT_BIAS,
    158 	PROGRAM_CUBE_INT_BIAS,
    159 	PROGRAM_CUBE_UINT_BIAS,
    160 	PROGRAM_CUBE_SHADOW_BIAS,
    161 
    162 	PROGRAM_1D_ARRAY_FLOAT,
    163 	PROGRAM_1D_ARRAY_INT,
    164 	PROGRAM_1D_ARRAY_UINT,
    165 	PROGRAM_1D_ARRAY_SHADOW,
    166 
    167 	PROGRAM_2D_ARRAY_FLOAT,
    168 	PROGRAM_2D_ARRAY_INT,
    169 	PROGRAM_2D_ARRAY_UINT,
    170 	PROGRAM_2D_ARRAY_SHADOW,
    171 
    172 	PROGRAM_3D_FLOAT,
    173 	PROGRAM_3D_INT,
    174 	PROGRAM_3D_UINT,
    175 
    176 	PROGRAM_3D_FLOAT_BIAS,
    177 	PROGRAM_3D_INT_BIAS,
    178 	PROGRAM_3D_UINT_BIAS,
    179 
    180 	PROGRAM_CUBE_ARRAY_FLOAT,
    181 	PROGRAM_CUBE_ARRAY_INT,
    182 	PROGRAM_CUBE_ARRAY_UINT,
    183 	PROGRAM_CUBE_ARRAY_SHADOW,
    184 
    185 	PROGRAM_BUFFER_FLOAT,
    186 	PROGRAM_BUFFER_INT,
    187 	PROGRAM_BUFFER_UINT,
    188 
    189 	PROGRAM_LAST
    190 };
    191 
    192 class ProgramLibrary
    193 {
    194 public:
    195 											ProgramLibrary			(const glu::RenderContext& context, tcu::TestLog& log, glu::GLSLVersion glslVersion, glu::Precision texCoordPrecision);
    196 											~ProgramLibrary			(void);
    197 
    198 	glu::ShaderProgram*						getProgram				(Program program);
    199 	void									clear					(void);
    200 
    201 private:
    202 											ProgramLibrary			(const ProgramLibrary& other);
    203 	ProgramLibrary&							operator=				(const ProgramLibrary& other);
    204 
    205 	const glu::RenderContext&				m_context;
    206 	tcu::TestLog&							m_log;
    207 	glu::GLSLVersion						m_glslVersion;
    208 	glu::Precision							m_texCoordPrecision;
    209 	std::map<Program, glu::ShaderProgram*>	m_programs;
    210 };
    211 
    212 class TextureRenderer
    213 {
    214 public:
    215 								TextureRenderer			(const glu::RenderContext& context, tcu::TestLog& log, glu::GLSLVersion glslVersion, glu::Precision texCoordPrecision);
    216 								~TextureRenderer		(void);
    217 
    218 	void						clear					(void); //!< Frees allocated resources. Destructor will call clear() as well.
    219 
    220 	void						renderQuad				(int texUnit, const float* texCoord, TextureType texType);
    221 	void						renderQuad				(int texUnit, const float* texCoord, const RenderParams& params);
    222 
    223 private:
    224 								TextureRenderer			(const TextureRenderer& other);
    225 	TextureRenderer&			operator=				(const TextureRenderer& other);
    226 
    227 	const glu::RenderContext&	m_renderCtx;
    228 	tcu::TestLog&				m_log;
    229 	ProgramLibrary				m_programLibrary;
    230 };
    231 
    232 class RandomViewport
    233 {
    234 public:
    235 	int		x;
    236 	int		y;
    237 	int		width;
    238 	int		height;
    239 
    240 	RandomViewport (const tcu::RenderTarget& renderTarget, int preferredWidth, int preferredHeight, deUint32 seed);
    241 };
    242 
    243 inline tcu::RGBA toRGBAMasked (const tcu::Vec4& v, deUint8 mask)
    244 {
    245 	return tcu::RGBA((mask&tcu::RGBA::RED_MASK)		? tcu::floatToU8(v.x()) : 0,
    246 					 (mask&tcu::RGBA::GREEN_MASK)	? tcu::floatToU8(v.y()) : 0,
    247 					 (mask&tcu::RGBA::BLUE_MASK)	? tcu::floatToU8(v.z()) : 0,
    248 					 (mask&tcu::RGBA::ALPHA_MASK)	? tcu::floatToU8(v.w()) : 0xFF); //!< \note Alpha defaults to full saturation when reading masked format
    249 }
    250 
    251 // \todo[jarkko 2015-05-19] remove this
    252 inline tcu::Vec4 toVec4 (const tcu::RGBA& c)
    253 {
    254 	return c.toVec();
    255 }
    256 
    257 inline deUint8 getColorMask (const tcu::PixelFormat& format)
    258 {
    259 	return (deUint8)((format.redBits	? tcu::RGBA::RED_MASK	: 0) |
    260 					 (format.greenBits	? tcu::RGBA::GREEN_MASK	: 0) |
    261 					 (format.blueBits	? tcu::RGBA::BLUE_MASK	: 0) |
    262 					 (format.alphaBits	? tcu::RGBA::ALPHA_MASK	: 0));
    263 }
    264 
    265 inline tcu::IVec4 getBitsVec (const tcu::PixelFormat& format)
    266 {
    267 	return tcu::IVec4(format.redBits, format.greenBits, format.blueBits, format.alphaBits);
    268 }
    269 
    270 inline tcu::BVec4 getCompareMask (const tcu::PixelFormat& format)
    271 {
    272 	return tcu::BVec4(format.redBits	> 0,
    273 					  format.greenBits	> 0,
    274 					  format.blueBits	> 0,
    275 					  format.alphaBits	> 0);
    276 }
    277 
    278 // \todo [2012-02-09 pyry] Move to tcuSurfaceAccess?
    279 class SurfaceAccess
    280 {
    281 public:
    282 							SurfaceAccess		(tcu::Surface& surface, const tcu::PixelFormat& colorFmt);
    283 							SurfaceAccess		(tcu::Surface& surface, const tcu::PixelFormat& colorFmt, int x, int y, int width, int height);
    284 							SurfaceAccess		(const SurfaceAccess& parent, int x, int y, int width, int height);
    285 
    286 	int						getWidth			(void) const	{ return m_width;	}
    287 	int						getHeight			(void) const	{ return m_height;	}
    288 
    289 	void					setPixel			(const tcu::Vec4& color, int x, int y) const;
    290 
    291 private:
    292 	mutable tcu::Surface*	m_surface;
    293 	deUint8					m_colorMask;
    294 	int						m_x;
    295 	int						m_y;
    296 	int						m_width;
    297 	int						m_height;
    298 };
    299 
    300 inline void SurfaceAccess::setPixel (const tcu::Vec4& color, int x, int y) const
    301 {
    302 	DE_ASSERT(de::inBounds(x, 0, m_width) && de::inBounds(y, 0, m_height));
    303 	m_surface->setPixel(m_x+x, m_y+y, toRGBAMasked(color, m_colorMask));
    304 }
    305 
    306 enum LodMode
    307 {
    308 	LODMODE_EXACT = 0,		//!< Ideal lod computation.
    309 	LODMODE_MIN_BOUND,		//!< Use estimation range minimum bound.
    310 	LODMODE_MAX_BOUND,		//!< Use estimation range maximum bound.
    311 
    312 	LODMODE_LAST
    313 };
    314 
    315 struct ReferenceParams : public RenderParams
    316 {
    317 	ReferenceParams (TextureType texType_)
    318 		: RenderParams	(texType_)
    319 		, sampler		()
    320 		, lodMode		(LODMODE_EXACT)
    321 		, minLod		(-1000.0f)
    322 		, maxLod		(1000.0f)
    323 		, baseLevel		(0)
    324 		, maxLevel		(1000)
    325 	{
    326 	}
    327 
    328 	ReferenceParams (TextureType texType_, const tcu::Sampler& sampler_, LodMode lodMode_ = LODMODE_EXACT)
    329 		: RenderParams	(texType_)
    330 		, sampler		(sampler_)
    331 		, lodMode		(lodMode_)
    332 		, minLod		(-1000.0f)
    333 		, maxLod		(1000.0f)
    334 		, baseLevel		(0)
    335 		, maxLevel		(1000)
    336 	{
    337 	}
    338 
    339 	tcu::Sampler		sampler;
    340 	LodMode				lodMode;
    341 	float				minLod;
    342 	float				maxLod;
    343 	int					baseLevel;
    344 	int					maxLevel;
    345 };
    346 
    347 // Similar to sampleTexture() except uses texelFetch.
    348 void			fetchTexture				(const SurfaceAccess& dst, const tcu::ConstPixelBufferAccess& src, const float* texCoord, const tcu::Vec4& colorScale, const tcu::Vec4& colorBias);
    349 
    350 void			sampleTexture				(const SurfaceAccess& dst, const tcu::Texture2DView&		src, const float* texCoord, const ReferenceParams& params);
    351 void			sampleTexture				(const SurfaceAccess& dst, const tcu::TextureCubeView&		src, const float* texCoord, const ReferenceParams& params);
    352 void			sampleTexture				(const SurfaceAccess& dst, const tcu::Texture2DArrayView&	src, const float* texCoord, const ReferenceParams& params);
    353 void			sampleTexture				(const SurfaceAccess& dst, const tcu::Texture3DView&		src, const float* texCoord, const ReferenceParams& params);
    354 void			sampleTexture				(const SurfaceAccess& dst, const tcu::TextureCubeArrayView&	src, const float* texCoord, const ReferenceParams& params);
    355 void			sampleTexture				(const SurfaceAccess& dst, const tcu::Texture1DView&		src, const float* texCoord, const ReferenceParams& params);
    356 void			sampleTexture				(const SurfaceAccess& dst, const tcu::Texture1DArrayView&	src, const float* texCoord, const ReferenceParams& params);
    357 
    358 float			computeLodFromDerivates		(LodMode mode, float dudx, float dudy);
    359 float			computeLodFromDerivates		(LodMode mode, float dudx, float dvdx, float dudy, float dvdy);
    360 float			computeLodFromDerivates		(LodMode mode, float dudx, float dvdx, float dwdx, float dudy, float dvdy, float dwdy);
    361 
    362 void			computeQuadTexCoord1D			(std::vector<float>& dst, float left, float right);
    363 void			computeQuadTexCoord1DArray		(std::vector<float>& dst, int layerNdx, float left, float right);
    364 void			computeQuadTexCoord2D			(std::vector<float>& dst, const tcu::Vec2& bottomLeft, const tcu::Vec2& topRight);
    365 void			computeQuadTexCoord2DArray		(std::vector<float>& dst, int layerNdx, const tcu::Vec2& bottomLeft, const tcu::Vec2& topRight);
    366 void			computeQuadTexCoord3D			(std::vector<float>& dst, const tcu::Vec3& p0, const tcu::Vec3& p1, const tcu::IVec3& dirSwz);
    367 void			computeQuadTexCoordCube			(std::vector<float>& dst, tcu::CubeFace face);
    368 void			computeQuadTexCoordCube			(std::vector<float>& dst, tcu::CubeFace face, const tcu::Vec2& bottomLeft, const tcu::Vec2& topRight);
    369 void			computeQuadTexCoordCubeArray	(std::vector<float>& dst, tcu::CubeFace face, const tcu::Vec2& bottomLeft, const tcu::Vec2& topRight, const tcu::Vec2& layerRange);
    370 
    371 bool			compareImages				(tcu::TestLog& log, const char* name, const char* desc, const tcu::Surface& reference, const tcu::Surface& rendered, tcu::RGBA threshold);
    372 bool			compareImages				(tcu::TestLog& log, const tcu::Surface& reference, const tcu::Surface& rendered, tcu::RGBA threshold);
    373 int				measureAccuracy				(tcu::TestLog& log, const tcu::Surface& reference, const tcu::Surface& rendered, int bestScoreDiff, int worstScoreDiff);
    374 
    375 int				computeTextureLookupDiff	(const tcu::ConstPixelBufferAccess&	result,
    376 											 const tcu::ConstPixelBufferAccess&	reference,
    377 											 const tcu::PixelBufferAccess&		errorMask,
    378 											 const tcu::Texture1DView&			src,
    379 											 const float*						texCoord,
    380 											 const ReferenceParams&				sampleParams,
    381 											 const tcu::LookupPrecision&		lookupPrec,
    382 											 const tcu::LodPrecision&			lodPrec,
    383 											 qpWatchDog*						watchDog);
    384 
    385 int				computeTextureLookupDiff	(const tcu::ConstPixelBufferAccess&	result,
    386 											 const tcu::ConstPixelBufferAccess&	reference,
    387 											 const tcu::PixelBufferAccess&		errorMask,
    388 											 const tcu::Texture2DView&			src,
    389 											 const float*						texCoord,
    390 											 const ReferenceParams&				sampleParams,
    391 											 const tcu::LookupPrecision&		lookupPrec,
    392 											 const tcu::LodPrecision&			lodPrec,
    393 											 qpWatchDog*						watchDog);
    394 
    395 int				computeTextureLookupDiff	(const tcu::ConstPixelBufferAccess&	result,
    396 											 const tcu::ConstPixelBufferAccess&	reference,
    397 											 const tcu::PixelBufferAccess&		errorMask,
    398 											 const tcu::TextureCubeView&		src,
    399 											 const float*						texCoord,
    400 											 const ReferenceParams&				sampleParams,
    401 											 const tcu::LookupPrecision&		lookupPrec,
    402 											 const tcu::LodPrecision&			lodPrec,
    403 											 qpWatchDog*						watchDog);
    404 
    405 int				computeTextureLookupDiff	(const tcu::ConstPixelBufferAccess&	result,
    406 											 const tcu::ConstPixelBufferAccess&	reference,
    407 											 const tcu::PixelBufferAccess&		errorMask,
    408 											 const tcu::Texture1DArrayView&		src,
    409 											 const float*						texCoord,
    410 											 const ReferenceParams&				sampleParams,
    411 											 const tcu::LookupPrecision&		lookupPrec,
    412 											 const tcu::LodPrecision&			lodPrec,
    413 											 qpWatchDog*						watchDog);
    414 
    415 int				computeTextureLookupDiff	(const tcu::ConstPixelBufferAccess&	result,
    416 											 const tcu::ConstPixelBufferAccess&	reference,
    417 											 const tcu::PixelBufferAccess&		errorMask,
    418 											 const tcu::Texture2DArrayView&		src,
    419 											 const float*						texCoord,
    420 											 const ReferenceParams&				sampleParams,
    421 											 const tcu::LookupPrecision&		lookupPrec,
    422 											 const tcu::LodPrecision&			lodPrec,
    423 											 qpWatchDog*						watchDog);
    424 
    425 int				computeTextureLookupDiff	(const tcu::ConstPixelBufferAccess&	result,
    426 											 const tcu::ConstPixelBufferAccess&	reference,
    427 											 const tcu::PixelBufferAccess&		errorMask,
    428 											 const tcu::Texture3DView&			src,
    429 											 const float*						texCoord,
    430 											 const ReferenceParams&				sampleParams,
    431 											 const tcu::LookupPrecision&		lookupPrec,
    432 											 const tcu::LodPrecision&			lodPrec,
    433 											 qpWatchDog*						watchDog);
    434 
    435 int				computeTextureLookupDiff	(const tcu::ConstPixelBufferAccess&	result,
    436 											 const tcu::ConstPixelBufferAccess&	reference,
    437 											 const tcu::PixelBufferAccess&		errorMask,
    438 											 const tcu::TextureCubeArrayView&	src,
    439 											 const float*						texCoord,
    440 											 const ReferenceParams&				sampleParams,
    441 											 const tcu::LookupPrecision&		lookupPrec,
    442 											 const tcu::IVec4&					coordBits,
    443 											 const tcu::LodPrecision&			lodPrec,
    444 											 qpWatchDog*						watchDog);
    445 
    446 bool			verifyTextureResult			(tcu::TestContext&					testCtx,
    447 											 const tcu::ConstPixelBufferAccess&	result,
    448 											 const tcu::Texture1DView&			src,
    449 											 const float*						texCoord,
    450 											 const ReferenceParams&				sampleParams,
    451 											 const tcu::LookupPrecision&		lookupPrec,
    452 											 const tcu::LodPrecision&			lodPrec,
    453 											 const tcu::PixelFormat&			pixelFormat);
    454 
    455 bool			verifyTextureResult			(tcu::TestContext&					testCtx,
    456 											 const tcu::ConstPixelBufferAccess&	result,
    457 											 const tcu::Texture2DView&			src,
    458 											 const float*						texCoord,
    459 											 const ReferenceParams&				sampleParams,
    460 											 const tcu::LookupPrecision&		lookupPrec,
    461 											 const tcu::LodPrecision&			lodPrec,
    462 											 const tcu::PixelFormat&			pixelFormat);
    463 
    464 bool			verifyTextureResult			(tcu::TestContext&					testCtx,
    465 											 const tcu::ConstPixelBufferAccess&	result,
    466 											 const tcu::TextureCubeView&		src,
    467 											 const float*						texCoord,
    468 											 const ReferenceParams&				sampleParams,
    469 											 const tcu::LookupPrecision&		lookupPrec,
    470 											 const tcu::LodPrecision&			lodPrec,
    471 											 const tcu::PixelFormat&			pixelFormat);
    472 
    473 bool			verifyTextureResult			(tcu::TestContext&					testCtx,
    474 											 const tcu::ConstPixelBufferAccess&	result,
    475 											 const tcu::Texture1DArrayView&		src,
    476 											 const float*						texCoord,
    477 											 const ReferenceParams&				sampleParams,
    478 											 const tcu::LookupPrecision&		lookupPrec,
    479 											 const tcu::LodPrecision&			lodPrec,
    480 											 const tcu::PixelFormat&			pixelFormat);
    481 
    482 bool			verifyTextureResult			(tcu::TestContext&					testCtx,
    483 											 const tcu::ConstPixelBufferAccess&	result,
    484 											 const tcu::Texture2DArrayView&		src,
    485 											 const float*						texCoord,
    486 											 const ReferenceParams&				sampleParams,
    487 											 const tcu::LookupPrecision&		lookupPrec,
    488 											 const tcu::LodPrecision&			lodPrec,
    489 											 const tcu::PixelFormat&			pixelFormat);
    490 
    491 bool			verifyTextureResult			(tcu::TestContext&					testCtx,
    492 											 const tcu::ConstPixelBufferAccess&	result,
    493 											 const tcu::Texture3DView&			src,
    494 											 const float*						texCoord,
    495 											 const ReferenceParams&				sampleParams,
    496 											 const tcu::LookupPrecision&		lookupPrec,
    497 											 const tcu::LodPrecision&			lodPrec,
    498 											 const tcu::PixelFormat&			pixelFormat);
    499 
    500 bool			verifyTextureResult			(tcu::TestContext&					testCtx,
    501 											 const tcu::ConstPixelBufferAccess&	result,
    502 											 const tcu::TextureCubeArrayView&	src,
    503 											 const float*						texCoord,
    504 											 const ReferenceParams&				sampleParams,
    505 											 const tcu::LookupPrecision&		lookupPrec,
    506 											 const tcu::IVec4&					coordBits,
    507 											 const tcu::LodPrecision&			lodPrec,
    508 											 const tcu::PixelFormat&			pixelFormat);
    509 
    510 int				computeTextureCompareDiff	(const tcu::ConstPixelBufferAccess&	result,
    511 											 const tcu::ConstPixelBufferAccess&	reference,
    512 											 const tcu::PixelBufferAccess&		errorMask,
    513 											 const tcu::Texture2DView&			src,
    514 											 const float*						texCoord,
    515 											 const ReferenceParams&				sampleParams,
    516 											 const tcu::TexComparePrecision&	comparePrec,
    517 											 const tcu::LodPrecision&			lodPrec,
    518 											 const tcu::Vec3&					nonShadowThreshold);
    519 
    520 int				computeTextureCompareDiff	(const tcu::ConstPixelBufferAccess&	result,
    521 											 const tcu::ConstPixelBufferAccess&	reference,
    522 											 const tcu::PixelBufferAccess&		errorMask,
    523 											 const tcu::TextureCubeView&		src,
    524 											 const float*						texCoord,
    525 											 const ReferenceParams&				sampleParams,
    526 											 const tcu::TexComparePrecision&	comparePrec,
    527 											 const tcu::LodPrecision&			lodPrec,
    528 											 const tcu::Vec3&					nonShadowThreshold);
    529 
    530 int				computeTextureCompareDiff	(const tcu::ConstPixelBufferAccess&	result,
    531 											 const tcu::ConstPixelBufferAccess&	reference,
    532 											 const tcu::PixelBufferAccess&		errorMask,
    533 											 const tcu::Texture2DArrayView&		src,
    534 											 const float*						texCoord,
    535 											 const ReferenceParams&				sampleParams,
    536 											 const tcu::TexComparePrecision&	comparePrec,
    537 											 const tcu::LodPrecision&			lodPrec,
    538 											 const tcu::Vec3&					nonShadowThreshold);
    539 
    540 // Mipmap generation comparison.
    541 
    542 struct GenMipmapPrecision
    543 {
    544 	tcu::IVec3			filterBits;			//!< Bits in filtering parameters (fixed-point).
    545 	tcu::Vec4			colorThreshold;		//!< Threshold for color value comparison.
    546 	tcu::BVec4			colorMask;			//!< Color channel comparison mask.
    547 };
    548 
    549 qpTestResult	compareGenMipmapResult		(tcu::TestLog& log, const tcu::Texture2D& resultTexture, const tcu::Texture2D& level0Reference, const GenMipmapPrecision& precision);
    550 qpTestResult	compareGenMipmapResult		(tcu::TestLog& log, const tcu::TextureCube& resultTexture, const tcu::TextureCube& level0Reference, const GenMipmapPrecision& precision);
    551 
    552 // Utility for logging texture gradient ranges.
    553 struct LogGradientFmt
    554 {
    555 	LogGradientFmt (const tcu::Vec4* min_, const tcu::Vec4* max_) : valueMin(min_), valueMax(max_) {}
    556 	const tcu::Vec4* valueMin;
    557 	const tcu::Vec4* valueMax;
    558 };
    559 
    560 std::ostream&			operator<<		(std::ostream& str, const LogGradientFmt& fmt);
    561 inline LogGradientFmt	formatGradient	(const tcu::Vec4* minVal, const tcu::Vec4* maxVal) { return LogGradientFmt(minVal, maxVal); }
    562 
    563 } // TextureTestUtil
    564 } // gls
    565 } // deqp
    566 
    567 #endif // _GLSTEXTURETESTUTIL_HPP
    568